PVC is used for hot and cold domestic water and DWV ( Drainage, Waste, Vent)and among other applications. There is no difference in PVC other than thickness and size. So you should not worry about Sugar Gliders becoming ill from them. The only thing that is different from CPVC is that its is used for mostly hot water applications and is smaller in the OD(outside diameter) and ID(inside diameter)and more costly. DO NOT USE ABS as it can be toxic to them. My son is a plumbers Apprentice and told me this. So I thought I would tell you.
You Can also buy 3 way slip fitting from any hardware store. Most places you will have to special order them. But keep I'm mind they can range from 1 dollar to several dollars. There are also 4 way tees that you can get too. You have to ask them to look them up. Its better to check several places and ask as many questions as you can think of. Other people all ways have other ideas and suggestions. You will be surprised how has pets and are doing or have done the same as you will.